Construction machinery manufacturers saw robust second-quarter earnings fueled by infrastructure and mining activity in Asia and Latin America, while North America rental companies and contractors replaced aging and obsolete fleets for a small but significant uptick in domestic sales. Many contractors sold off equipment during the downturn as work became scarce, opting to rent rather than own.Caterpillar Inc.'s second-quarter earnings soared to $1.02 billion, a 44% increase over last year, and the company is spending over $1 billion to ramp-up production in China. Volvo Construction Equipment strengthened its position in wheel-loader and excavator sales in China in the second quarter,
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.